In the attached video, you can see me attempting to swap a dirt block with a diamond block in my inventory. I want these items to switch places. It works at a slow speed, as you can observe, but not when done a bit faster. When I try to rapidly swap the items, they simply do not respond or, as shown in certain parts of the video, teleport to my first inventory slot. This bug causes nobody on my realm, including myself, to want to organize their inventories or chests, resulting in complete chaos and a loss of knowledge regarding the location of specific items. Consequently, nobody can find their building materials, which significantly hampers the gameplay experience. This bug completely ruins the overall gaming experience 

 
The video demonstrates the following: 1. It worked a few times. 2. It failed many more times. 3. How the item is teleported downward. 

Edit:

Example of how it would be better:

In the old Minecraft PlayStation versions (I'll call them Legacy Edition), this bug did not exist. Therefore, sorting the inventory was really smooth, and it never caused any problems for anyone.

(When I then switched to the Bedrock version, this was the very first bug that caught my attention, and one that bothers me and (surely others) then and now.)